In this short article I’m going to make a comparison between std::vector, sorted std::vector and std::set. However, I’m going to focus only on one aspect – which collection is faster during lookup.
Looks like the answer is rather trivial – std::map and sorted std::vector offer access to any element in O(log n) time while unsorted std::vector offers linear finding. To be precise – std::vector + std::find as std::vector doesn’t have built-in find function. Indeed, sorted collections are winners… Or maybe the answer is not so trivial? Czytaj dalej std::vector vs sorted std::vector vs std::set